Presentation
Numbness in both feet.
Patient Data
T6-7 disc degeneration is seen as a decreased height and hydration signal. It shows a related posterior extradural lesion with a hypointense signal on T2 and a hyperintense core on T1, mostly a calcified lesion. It is indenting the anterolateral aspect of the spinal cord at the same level as moderate spinal canal stenosis and a high T2 signal of the spinal cord reflecting compressive myelopathy.
Focal ossification of the ligamenta flava is noted at the T7-8 level, indenting the posterior aspect of the spinal cord at the same level.
Case Discussion
MRI features are suggestive of a calcified thoracic disc herniation with subdural extension, giving a Matterhorn sign with spinal canal stenosis and compressive myelopathy. It also shows focal ossification of the ligamenta flavum. There are no intrathecal calcified structures, excluding arachnoiditis ossificans.
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